In your game library, right-click on Hegemony Rome and select properties. There should be a new tab that says language where you can now select German or English. The game will have to do a relatively small update to download the german assets.

It could be that the game hasn't downloaded today's update yet. When you start the game, what is the version number in the top-right corner of the title screen? Should be something like 29856 (Ithink the 32 and 64 bit versions have different numbers).

If it's not correct, sometimes exiting steam and logging in again will force an update.

Yes, it's 29856 x 64. Anyway, I still have no language tab and I just restarted Steam. Earlier today the game downloaded an update that was approximately 500 mb in size. Is there another update coming or was this the one supposed to add the german language? Thanks in advance for your help, keep up the great work!